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https://issues.apache.org/jira/browse/SPARK-2350?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Or updated SPARK-2350:
-----------------------------
Affects Version/s: (was: 1.1.0)
1.0.0
> Master throws NPE
> -----------------
>
> Key: SPARK-2350
> URL: https://issues.apache.org/jira/browse/SPARK-2350
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.0.0
> Reporter: Andrew Or
> Assignee: Aaron Davidson
> Fix For: 0.9.2, 1.0.1, 1.1.0
>
>
> ... if we launch a driver and there are more waiting drivers to be launched.
> This is because we remove from a list while iterating through this.
> Here is the culprit from Master.scala (L487 as of the creation of this JIRA,
> commit bc7041a42dfa84312492ea8cae6fdeaeac4f6d1c).
> {code}
> for (driver <- waitingDrivers) {
> if (worker.memoryFree >= driver.desc.mem && worker.coresFree >=
> driver.desc.cores) {
> launchDriver(worker, driver)
> waitingDrivers -= driver
> }
> }
> {code}
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